Bug#1114144: gtk4: FTBFS: gtk:css / parser rotate3d-crash.css killed by SIGSEGV

[Simon McVittie]

Control: retitle -1 gtk4: FTBFS: gtk:css / parser rotate3d-crash.css killed by SIGSEGV

On Fri, 05 Sep 2025 at 18:18:22 +0000, Santiago Vila forwarded:
>412/700 gtk:css / parser rotate3d-crash.css                                          ERROR            0.04s   killed by signal 11 SIGSEGV
>
>Ok:                688
>Fail:              1
>Skipped:           11

This looks like the (only? first?) thing that's failing here. Possibly 
a recent regression, with gcc-15 or some other dependency change?

     smcv